Commit | Line | Data |
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4f45f9bb JD |
1 | /* |
2 | * Babeltrace - Debug Information State Tracker | |
3 | * | |
4 | * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation | |
5 | * Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com> | |
6 | * Copyright (c) 2015 Antoine Busque <abusque@efficios.com> | |
7 | * Copyright (c) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
8 | * | |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
25 | * SOFTWARE. | |
26 | */ | |
27 | ||
b4565e8b PP |
28 | #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-UTILS-DEBUG-INFO-FLT" |
29 | #include "logging.h" | |
30 | ||
4f45f9bb JD |
31 | #include <assert.h> |
32 | #include <glib.h> | |
33 | #include "debug-info.h" | |
34 | #include "bin-info.h" | |
35 | #include "utils.h" | |
36 | #include "copy.h" | |
37 | ||
38 | struct proc_debug_info_sources { | |
39 | /* | |
40 | * Hash table: base address (pointer to uint64_t) to bin info; owned by | |
41 | * proc_debug_info_sources. | |
42 | */ | |
43 | GHashTable *baddr_to_bin_info; | |
44 | ||
45 | /* | |
46 | * Hash table: IP (pointer to uint64_t) to (struct debug_info_source *); | |
47 | * owned by proc_debug_info_sources. | |
48 | */ | |
49 | GHashTable *ip_to_debug_info_src; | |
50 | }; | |
51 | ||
52 | struct debug_info { | |
9d325e17 PP |
53 | struct debug_info_component *comp; |
54 | ||
4f45f9bb JD |
55 | /* |
56 | * Hash table of VPIDs (pointer to int64_t) to | |
57 | * (struct ctf_proc_debug_infos*); owned by debug_info. | |
58 | */ | |
59 | GHashTable *vpid_to_proc_dbg_info_src; | |
60 | GQuark q_statedump_bin_info; | |
61 | GQuark q_statedump_debug_link; | |
62 | GQuark q_statedump_build_id; | |
63 | GQuark q_statedump_start; | |
64 | GQuark q_dl_open; | |
65 | GQuark q_lib_load; | |
66 | GQuark q_lib_unload; | |
67 | }; | |
68 | ||
69 | static | |
70 | int debug_info_init(struct debug_info *info) | |
71 | { | |
72 | info->q_statedump_bin_info = g_quark_from_string( | |
73 | "lttng_ust_statedump:bin_info"); | |
74 | info->q_statedump_debug_link = g_quark_from_string( | |
75 | "lttng_ust_statedump:debug_link)"); | |
76 | info->q_statedump_build_id = g_quark_from_string( | |
77 | "lttng_ust_statedump:build_id"); | |
78 | info->q_statedump_start = g_quark_from_string( | |
79 | "lttng_ust_statedump:start"); | |
80 | info->q_dl_open = g_quark_from_string("lttng_ust_dl:dlopen"); | |
81 | info->q_lib_load = g_quark_from_string("lttng_ust_lib:load"); | |
82 | info->q_lib_unload = g_quark_from_string("lttng_ust_lib:unload"); | |
83 | ||
84 | return bin_info_init(); | |
85 | } | |
86 | ||
87 | static | |
88 | void debug_info_source_destroy(struct debug_info_source *debug_info_src) | |
89 | { | |
90 | if (!debug_info_src) { | |
91 | return; | |
92 | } | |
93 | ||
94 | free(debug_info_src->func); | |
95 | free(debug_info_src->src_path); | |
96 | free(debug_info_src->bin_path); | |
97 | free(debug_info_src->bin_loc); | |
98 | g_free(debug_info_src); | |
99 | } | |
100 | ||
101 | static | |
102 | struct debug_info_source *debug_info_source_create_from_bin(struct bin_info *bin, | |
103 | uint64_t ip) | |
104 | { | |
105 | int ret; | |
106 | struct debug_info_source *debug_info_src = NULL; | |
107 | struct source_location *src_loc = NULL; | |
108 | ||
109 | debug_info_src = g_new0(struct debug_info_source, 1); | |
110 | ||
111 | if (!debug_info_src) { | |
112 | goto end; | |
113 | } | |
114 | ||
115 | /* Lookup function name */ | |
116 | ret = bin_info_lookup_function_name(bin, ip, &debug_info_src->func); | |
117 | if (ret) { | |
118 | goto error; | |
119 | } | |
120 | ||
121 | /* Can't retrieve src_loc from ELF, or could not find binary, skip. */ | |
122 | if (!bin->is_elf_only || !debug_info_src->func) { | |
123 | /* Lookup source location */ | |
124 | ret = bin_info_lookup_source_location(bin, ip, &src_loc); | |
b4565e8b | 125 | BT_LOGD("Failed to lookup source location: ret=%d", ret); |
4f45f9bb JD |
126 | } |
127 | ||
128 | if (src_loc) { | |
129 | debug_info_src->line_no = src_loc->line_no; | |
130 | ||
131 | if (src_loc->filename) { | |
132 | debug_info_src->src_path = strdup(src_loc->filename); | |
133 | if (!debug_info_src->src_path) { | |
134 | goto error; | |
135 | } | |
136 | ||
137 | debug_info_src->short_src_path = get_filename_from_path( | |
138 | debug_info_src->src_path); | |
139 | } | |
140 | ||
141 | source_location_destroy(src_loc); | |
142 | } | |
143 | ||
144 | if (bin->elf_path) { | |
145 | debug_info_src->bin_path = strdup(bin->elf_path); | |
146 | if (!debug_info_src->bin_path) { | |
147 | goto error; | |
148 | } | |
149 | ||
150 | debug_info_src->short_bin_path = get_filename_from_path( | |
151 | debug_info_src->bin_path); | |
152 | ||
153 | ret = bin_info_get_bin_loc(bin, ip, &(debug_info_src->bin_loc)); | |
154 | if (ret) { | |
155 | goto error; | |
156 | } | |
157 | } | |
158 | ||
159 | end: | |
160 | return debug_info_src; | |
161 | ||
162 | error: | |
163 | debug_info_source_destroy(debug_info_src); | |
164 | return NULL; | |
165 | } | |
166 | ||
167 | static | |
168 | void proc_debug_info_sources_destroy( | |
169 | struct proc_debug_info_sources *proc_dbg_info_src) | |
170 | { | |
171 | if (!proc_dbg_info_src) { | |
172 | return; | |
173 | } | |
174 | ||
175 | if (proc_dbg_info_src->baddr_to_bin_info) { | |
176 | g_hash_table_destroy(proc_dbg_info_src->baddr_to_bin_info); | |
177 | } | |
178 | ||
179 | if (proc_dbg_info_src->ip_to_debug_info_src) { | |
180 | g_hash_table_destroy(proc_dbg_info_src->ip_to_debug_info_src); | |
181 | } | |
182 | ||
183 | g_free(proc_dbg_info_src); | |
184 | } | |
185 | ||
186 | static | |
187 | struct proc_debug_info_sources *proc_debug_info_sources_create(void) | |
188 | { | |
189 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; | |
190 | ||
191 | proc_dbg_info_src = g_new0(struct proc_debug_info_sources, 1); | |
192 | if (!proc_dbg_info_src) { | |
193 | goto end; | |
194 | } | |
195 | ||
196 | proc_dbg_info_src->baddr_to_bin_info = g_hash_table_new_full( | |
197 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
198 | (GDestroyNotify) bin_info_destroy); | |
199 | if (!proc_dbg_info_src->baddr_to_bin_info) { | |
200 | goto error; | |
201 | } | |
202 | ||
203 | proc_dbg_info_src->ip_to_debug_info_src = g_hash_table_new_full( | |
204 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
205 | (GDestroyNotify) debug_info_source_destroy); | |
206 | if (!proc_dbg_info_src->ip_to_debug_info_src) { | |
207 | goto error; | |
208 | } | |
209 | ||
210 | end: | |
211 | return proc_dbg_info_src; | |
212 | ||
213 | error: | |
214 | proc_debug_info_sources_destroy(proc_dbg_info_src); | |
215 | return NULL; | |
216 | } | |
217 | ||
218 | static | |
219 | struct proc_debug_info_sources *proc_debug_info_sources_ht_get_entry( | |
220 | GHashTable *ht, int64_t vpid) | |
221 | { | |
222 | gpointer key = g_new0(int64_t, 1); | |
223 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; | |
224 | ||
225 | if (!key) { | |
226 | goto end; | |
227 | } | |
228 | ||
229 | *((int64_t *) key) = vpid; | |
230 | ||
231 | /* Exists? Return it */ | |
232 | proc_dbg_info_src = g_hash_table_lookup(ht, key); | |
233 | if (proc_dbg_info_src) { | |
234 | goto end; | |
235 | } | |
236 | ||
237 | /* Otherwise, create and return it */ | |
238 | proc_dbg_info_src = proc_debug_info_sources_create(); | |
239 | if (!proc_dbg_info_src) { | |
240 | goto end; | |
241 | } | |
242 | ||
243 | g_hash_table_insert(ht, key, proc_dbg_info_src); | |
244 | /* Ownership passed to ht */ | |
245 | key = NULL; | |
246 | end: | |
247 | g_free(key); | |
248 | return proc_dbg_info_src; | |
249 | } | |
250 | ||
251 | static | |
252 | struct debug_info_source *proc_debug_info_sources_get_entry( | |
253 | struct proc_debug_info_sources *proc_dbg_info_src, uint64_t ip) | |
254 | { | |
255 | struct debug_info_source *debug_info_src = NULL; | |
256 | gpointer key = g_new0(uint64_t, 1); | |
257 | GHashTableIter iter; | |
258 | gpointer baddr, value; | |
259 | ||
260 | if (!key) { | |
261 | goto end; | |
262 | } | |
263 | ||
264 | *((uint64_t *) key) = ip; | |
265 | ||
266 | /* Look in IP to debug infos hash table first. */ | |
267 | debug_info_src = g_hash_table_lookup( | |
268 | proc_dbg_info_src->ip_to_debug_info_src, | |
269 | key); | |
270 | if (debug_info_src) { | |
271 | goto end; | |
272 | } | |
273 | ||
274 | /* Check in all bin_infos. */ | |
275 | g_hash_table_iter_init(&iter, proc_dbg_info_src->baddr_to_bin_info); | |
276 | ||
277 | while (g_hash_table_iter_next(&iter, &baddr, &value)) | |
278 | { | |
279 | struct bin_info *bin = value; | |
280 | ||
281 | if (!bin_info_has_address(value, ip)) { | |
282 | continue; | |
283 | } | |
284 | ||
285 | /* | |
286 | * Found; add it to cache. | |
287 | * | |
288 | * FIXME: this should be bounded in size (and implement | |
289 | * a caching policy), and entries should be prunned when | |
290 | * libraries are unmapped. | |
291 | */ | |
292 | debug_info_src = debug_info_source_create_from_bin(bin, ip); | |
293 | if (debug_info_src) { | |
294 | g_hash_table_insert( | |
295 | proc_dbg_info_src->ip_to_debug_info_src, | |
296 | key, debug_info_src); | |
297 | /* Ownership passed to ht. */ | |
298 | key = NULL; | |
299 | } | |
300 | break; | |
301 | } | |
302 | ||
303 | end: | |
304 | free(key); | |
305 | return debug_info_src; | |
306 | } | |
307 | ||
308 | BT_HIDDEN | |
309 | struct debug_info_source *debug_info_query(struct debug_info *debug_info, | |
310 | int64_t vpid, uint64_t ip) | |
311 | { | |
312 | struct debug_info_source *dbg_info_src = NULL; | |
313 | struct proc_debug_info_sources *proc_dbg_info_src; | |
314 | ||
315 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
316 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
317 | if (!proc_dbg_info_src) { | |
318 | goto end; | |
319 | } | |
320 | ||
321 | dbg_info_src = proc_debug_info_sources_get_entry(proc_dbg_info_src, ip); | |
322 | ||
323 | end: | |
324 | return dbg_info_src; | |
325 | } | |
326 | ||
327 | BT_HIDDEN | |
9d325e17 | 328 | struct debug_info *debug_info_create(struct debug_info_component *comp) |
4f45f9bb JD |
329 | { |
330 | int ret; | |
331 | struct debug_info *debug_info; | |
332 | ||
333 | debug_info = g_new0(struct debug_info, 1); | |
334 | if (!debug_info) { | |
335 | goto end; | |
336 | } | |
337 | ||
338 | debug_info->vpid_to_proc_dbg_info_src = g_hash_table_new_full( | |
339 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
340 | (GDestroyNotify) proc_debug_info_sources_destroy); | |
341 | if (!debug_info->vpid_to_proc_dbg_info_src) { | |
342 | goto error; | |
343 | } | |
344 | ||
9d325e17 | 345 | debug_info->comp = comp; |
4f45f9bb JD |
346 | ret = debug_info_init(debug_info); |
347 | if (ret) { | |
348 | goto error; | |
349 | } | |
350 | ||
351 | end: | |
352 | return debug_info; | |
353 | error: | |
354 | g_free(debug_info); | |
355 | return NULL; | |
356 | } | |
357 | ||
358 | BT_HIDDEN | |
359 | void debug_info_destroy(struct debug_info *debug_info) | |
360 | { | |
361 | if (!debug_info) { | |
362 | goto end; | |
363 | } | |
364 | ||
365 | if (debug_info->vpid_to_proc_dbg_info_src) { | |
366 | g_hash_table_destroy(debug_info->vpid_to_proc_dbg_info_src); | |
367 | } | |
368 | ||
369 | g_free(debug_info); | |
370 | end: | |
371 | return; | |
372 | } | |
373 | ||
374 | static | |
375 | void handle_statedump_build_id_event(FILE *err, struct debug_info *debug_info, | |
376 | struct bt_ctf_event *event) | |
377 | { | |
378 | struct proc_debug_info_sources *proc_dbg_info_src; | |
379 | struct bin_info *bin = NULL; | |
380 | int ret; | |
381 | int64_t vpid; | |
382 | uint64_t baddr; | |
383 | ||
384 | ret = get_stream_event_context_int_field_value(err, | |
385 | event, "_vpid", &vpid); | |
386 | if (ret) { | |
4f45f9bb JD |
387 | goto end; |
388 | } | |
389 | ||
390 | ret = get_payload_unsigned_int_field_value(err, | |
391 | event, "_baddr", &baddr); | |
392 | if (ret) { | |
393 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
394 | __FILE__, __LINE__); | |
4f45f9bb JD |
395 | goto end; |
396 | } | |
397 | ||
398 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
399 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
400 | if (!proc_dbg_info_src) { | |
401 | goto end; | |
402 | } | |
403 | ||
404 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
405 | (gpointer) &baddr); | |
406 | if (!bin) { | |
407 | /* | |
408 | * The build_id event comes after the bin has been | |
409 | * created. If it isn't found, just ignore this event. | |
410 | */ | |
411 | goto end; | |
412 | } | |
413 | ||
414 | ret = get_payload_build_id_field_value(err, event, "_build_id", | |
415 | &bin->build_id, &bin->build_id_len); | |
416 | if (ret) { | |
417 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
418 | __FILE__, __LINE__); | |
4f45f9bb JD |
419 | goto end; |
420 | } | |
421 | ||
422 | /* | |
423 | * Reset the is_elf_only flag in case it had been set | |
424 | * previously, because we might find separate debug info using | |
425 | * the new build id information. | |
426 | */ | |
427 | bin->is_elf_only = false; | |
428 | ||
429 | // TODO | |
430 | // bin_info_set_build_id(bin, build_id, build_id_len); | |
431 | ||
432 | end: | |
433 | return; | |
434 | } | |
435 | ||
436 | static | |
437 | void handle_statedump_debug_link_event(FILE *err, struct debug_info *debug_info, | |
438 | struct bt_ctf_event *event) | |
439 | { | |
440 | struct proc_debug_info_sources *proc_dbg_info_src; | |
441 | struct bin_info *bin = NULL; | |
442 | int64_t vpid; | |
443 | uint64_t baddr; | |
444 | const char *filename = NULL; | |
445 | uint32_t crc32; | |
446 | uint64_t tmp; | |
447 | int ret; | |
448 | ||
449 | ret = get_stream_event_context_int_field_value(err, event, | |
450 | "_vpid", &vpid); | |
451 | if (ret) { | |
4f45f9bb JD |
452 | goto end; |
453 | } | |
454 | ||
455 | ret = get_payload_unsigned_int_field_value(err, | |
456 | event, "_baddr", &baddr); | |
457 | if (ret) { | |
458 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
459 | __FILE__, __LINE__); | |
460 | ret = -1; | |
461 | goto end; | |
462 | } | |
463 | ||
464 | ret = get_payload_unsigned_int_field_value(err, event, "_crc32", &tmp); | |
465 | if (ret) { | |
466 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
467 | __FILE__, __LINE__); | |
468 | ret = -1; | |
469 | goto end; | |
470 | } | |
471 | crc32 = (uint32_t) tmp; | |
472 | ||
473 | ret = get_payload_string_field_value(err, | |
474 | event, "_filename", &filename); | |
475 | if (ret) { | |
476 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
477 | __FILE__, __LINE__); | |
478 | ret = -1; | |
479 | goto end; | |
480 | } | |
481 | ||
482 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
483 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
484 | if (!proc_dbg_info_src) { | |
485 | goto end; | |
486 | } | |
487 | ||
488 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
489 | (gpointer) &baddr); | |
490 | if (!bin) { | |
491 | /* | |
492 | * The debug_link event comes after the bin has been | |
493 | * created. If it isn't found, just ignore this event. | |
494 | */ | |
495 | goto end; | |
496 | } | |
497 | ||
498 | bin_info_set_debug_link(bin, filename, crc32); | |
499 | ||
500 | end: | |
501 | return; | |
502 | } | |
503 | ||
504 | static | |
505 | void handle_bin_info_event(FILE *err, struct debug_info *debug_info, | |
506 | struct bt_ctf_event *event, bool has_pic_field) | |
507 | { | |
508 | struct proc_debug_info_sources *proc_dbg_info_src; | |
509 | struct bin_info *bin; | |
510 | uint64_t baddr, memsz; | |
511 | int64_t vpid; | |
512 | const char *path; | |
513 | gpointer key = NULL; | |
514 | bool is_pic; | |
515 | int ret; | |
516 | ||
517 | ret = get_payload_unsigned_int_field_value(err, | |
518 | event, "_baddr", &baddr); | |
519 | if (ret) { | |
520 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
521 | __FILE__, __LINE__); | |
4f45f9bb JD |
522 | goto end; |
523 | } | |
524 | ||
525 | ret = get_payload_unsigned_int_field_value(err, | |
526 | event, "_memsz", &memsz); | |
527 | if (ret) { | |
528 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
529 | __FILE__, __LINE__); | |
4f45f9bb JD |
530 | goto end; |
531 | } | |
532 | ||
65db8b88 JD |
533 | /* |
534 | * This field is not produced by the dlopen event emitted before | |
535 | * lttng-ust 2.9. | |
536 | */ | |
4f45f9bb JD |
537 | ret = get_payload_string_field_value(err, |
538 | event, "_path", &path); | |
65db8b88 | 539 | if (ret || !path) { |
4f45f9bb JD |
540 | goto end; |
541 | } | |
542 | ||
543 | if (has_pic_field) { | |
544 | uint64_t tmp; | |
545 | ||
546 | ret = get_payload_unsigned_int_field_value(err, | |
547 | event, "_is_pic", &tmp); | |
548 | if (ret) { | |
549 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
550 | __FILE__, __LINE__); | |
551 | ret = -1; | |
552 | goto end; | |
553 | } | |
554 | is_pic = (tmp == 1); | |
555 | } else { | |
556 | /* | |
557 | * dlopen has no is_pic field, because the shared | |
558 | * object is always PIC. | |
559 | */ | |
560 | is_pic = true; | |
561 | } | |
562 | ||
563 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
564 | &vpid); | |
565 | if (ret) { | |
4f45f9bb JD |
566 | goto end; |
567 | } | |
568 | ||
4f45f9bb JD |
569 | if (memsz == 0) { |
570 | /* Ignore VDSO. */ | |
571 | goto end; | |
572 | } | |
573 | ||
574 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
575 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
576 | if (!proc_dbg_info_src) { | |
577 | goto end; | |
578 | } | |
579 | ||
580 | key = g_new0(uint64_t, 1); | |
581 | if (!key) { | |
582 | goto end; | |
583 | } | |
584 | ||
585 | *((uint64_t *) key) = baddr; | |
586 | ||
587 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
588 | key); | |
589 | if (bin) { | |
590 | goto end; | |
591 | } | |
592 | ||
9d325e17 PP |
593 | bin = bin_info_create(path, baddr, memsz, is_pic, |
594 | debug_info->comp->arg_debug_dir, | |
595 | debug_info->comp->arg_target_prefix); | |
4f45f9bb JD |
596 | if (!bin) { |
597 | goto end; | |
598 | } | |
599 | ||
600 | g_hash_table_insert(proc_dbg_info_src->baddr_to_bin_info, | |
601 | key, bin); | |
602 | /* Ownership passed to ht. */ | |
603 | key = NULL; | |
604 | ||
605 | end: | |
606 | g_free(key); | |
607 | return; | |
608 | } | |
609 | ||
610 | static inline | |
611 | void handle_statedump_bin_info_event(FILE *err, struct debug_info *debug_info, | |
612 | struct bt_ctf_event *event) | |
613 | { | |
614 | handle_bin_info_event(err, debug_info, event, true); | |
615 | } | |
616 | ||
617 | static inline | |
618 | void handle_lib_load_event(FILE *err, struct debug_info *debug_info, | |
619 | struct bt_ctf_event *event) | |
620 | { | |
621 | handle_bin_info_event(err, debug_info, event, false); | |
622 | } | |
623 | ||
624 | static inline | |
625 | void handle_lib_unload_event(FILE *err, struct debug_info *debug_info, | |
626 | struct bt_ctf_event *event) | |
627 | { | |
628 | struct proc_debug_info_sources *proc_dbg_info_src; | |
629 | uint64_t baddr; | |
630 | int64_t vpid; | |
631 | gpointer key_ptr = NULL; | |
632 | int ret; | |
633 | ||
634 | ret = get_payload_unsigned_int_field_value(err, | |
635 | event, "_baddr", &baddr); | |
636 | if (ret) { | |
637 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
638 | __FILE__, __LINE__); | |
639 | ret = -1; | |
640 | goto end; | |
641 | } | |
642 | ||
643 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
644 | &vpid); | |
645 | if (ret) { | |
4f45f9bb JD |
646 | goto end; |
647 | } | |
648 | ||
649 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
650 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
651 | if (!proc_dbg_info_src) { | |
652 | goto end; | |
653 | } | |
654 | ||
655 | key_ptr = (gpointer) &baddr; | |
656 | (void) g_hash_table_remove(proc_dbg_info_src->baddr_to_bin_info, | |
657 | key_ptr); | |
658 | end: | |
659 | return; | |
660 | } | |
661 | ||
662 | static | |
663 | void handle_statedump_start(FILE *err, struct debug_info *debug_info, | |
664 | struct bt_ctf_event *event) | |
665 | { | |
666 | struct proc_debug_info_sources *proc_dbg_info_src; | |
667 | int64_t vpid; | |
668 | int ret; | |
669 | ||
670 | ret = get_stream_event_context_int_field_value(err, event, | |
671 | "_vpid", &vpid); | |
672 | if (ret) { | |
4f45f9bb JD |
673 | goto end; |
674 | } | |
675 | ||
676 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
677 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
678 | if (!proc_dbg_info_src) { | |
679 | goto end; | |
680 | } | |
681 | ||
682 | g_hash_table_remove_all(proc_dbg_info_src->baddr_to_bin_info); | |
683 | g_hash_table_remove_all(proc_dbg_info_src->ip_to_debug_info_src); | |
684 | ||
685 | end: | |
686 | return; | |
687 | } | |
688 | ||
689 | BT_HIDDEN | |
690 | void debug_info_handle_event(FILE *err, struct bt_ctf_event *event, | |
691 | struct debug_info *debug_info) | |
692 | { | |
693 | struct bt_ctf_event_class *event_class; | |
694 | const char *event_name; | |
695 | GQuark q_event_name; | |
696 | ||
697 | if (!debug_info || !event) { | |
698 | goto end; | |
699 | } | |
700 | event_class = bt_ctf_event_get_class(event); | |
701 | if (!event_class) { | |
702 | goto end; | |
703 | } | |
704 | event_name = bt_ctf_event_class_get_name(event_class); | |
705 | if (!event_name) { | |
706 | goto end_put_class; | |
707 | } | |
708 | q_event_name = g_quark_try_string(event_name); | |
709 | ||
710 | if (q_event_name == debug_info->q_statedump_bin_info) { | |
711 | /* State dump */ | |
712 | handle_statedump_bin_info_event(err, debug_info, event); | |
713 | } else if (q_event_name == debug_info->q_dl_open || | |
714 | q_event_name == debug_info->q_lib_load) { | |
715 | /* | |
716 | * dl_open and lib_load events are both checked for since | |
717 | * only dl_open was produced as of lttng-ust 2.8. | |
718 | * | |
719 | * lib_load, which is produced from lttng-ust 2.9+, is a lot | |
720 | * more reliable since it will be emitted when other functions | |
721 | * of the dlopen family are called (e.g. dlmopen) and when | |
722 | * library are transitively loaded. | |
723 | */ | |
724 | handle_lib_load_event(err, debug_info, event); | |
725 | } else if (q_event_name == debug_info->q_statedump_start) { | |
726 | /* Start state dump */ | |
727 | handle_statedump_start(err, debug_info, event); | |
728 | } else if (q_event_name == debug_info->q_statedump_debug_link) { | |
729 | /* Debug link info */ | |
730 | handle_statedump_debug_link_event(err, debug_info, event); | |
731 | } else if (q_event_name == debug_info->q_statedump_build_id) { | |
732 | /* Build ID info */ | |
733 | handle_statedump_build_id_event(err, debug_info, event); | |
734 | } else if (q_event_name == debug_info-> q_lib_unload) { | |
735 | handle_lib_unload_event(err, debug_info, event); | |
736 | } | |
737 | ||
738 | end_put_class: | |
739 | bt_put(event_class); | |
740 | end: | |
741 | return; | |
742 | } |